Drawmer Six-Pack Multi-Ch. Dynamics User Manual

MULTI-CHANNEL

SURROUND DYNAMICS

OPERATORS MANUAL

CONTENTS

SAFETY CONSIDERATIONS page 1
INTRODUCTION page 2
INSTALLATION page 2
POWER CONNECTION Page 2
AUDIO CONNECTIONS Page 3
CONTROL DESCRIPTIONS page 5
OPERATION page 8
IF A FAULT DEVELOPS page 10
CONTACTING DRAWMER page 10
TECHNICAL SPECIFICATION page 11
BLOCK DIAGRAM page 12

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COPYRIGHT

This manual is copyrighted © 2001 by Drawmer Electronics, Ltd. With all rights
reserved. Under copyright laws, this manual may not be duplicated in whole or
in part without the written consent of Drawmer.

ONE YEAR LIMITED WARRANTY

Drawmer Electronics Ltd., warrants the Drawmer “Six-Pack” audio processor to
conform substantially to the specifications of this manual for a period of one year
from the original date of purchase when used in accordance with the
specifications detailed in this manual. In the case of a valid warranty claim, your
sole and exclusive remedy and Drawmer’s entire liability under any theory of
liability will be to, at Drawmer’s discretion, repair or replace the product without
charge, or, if not possible, to refund the purchase price to you. This warranty is
not transferable. It applies only to the original purchaser of the product.

For warranty service please call your local Drawmer dealer. Alternatively call
Drawmer Electronics Ltd. at [phone]. Then ship the defective product,
with transportation and insurance charges pre-paid, to Drawmer Electronics Ltd.,
Coleman Street, Parkgate, Rotherham, S62 6EL UK. Write the RA number in large
letters in a prominent position on the shipping box. Enclose your name, address,
telephone number, copy of the original sales invoice and a detailed description
of the problem. Drawmer will not accept responsibility for loss or damage during
transit.

This warranty is void if the product has been damaged by misuse, modification
or unauthorised repair.

THIS WARRANTY IS IN LIEU OF ALL WARRANTIES, WHETHER ORAL OR
WRITTEN, EXPRESSED, IMPLIED OR STATUTORY. DRAWMER MAKES NO OTHER
WARRANTY EITHER EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION,
ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, OR NON-INFRINGEMENT. PURCHASER’S SOLE AND
EXCLUSIVE REMEDY UNDER THIS WARRANTY SHALL BE REPAIR OR
REPLACEMENT AS SPECIFIED HEREIN.

IN NO EVENT WILL DRAWMER ELECTRONICS LTD. BE LIABLE FOR ANY DIRECT,
INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING
FROM ANY DEFECT IN THE PRODUCT, INCLUDING LOST PROFITS, DAMAGE TO
PROPERTY, AND, TO THE EXTENT PERMITTED BY LAW, DAMAGE FOR
PERSONAL INJURY, EVEN IF DRAWMER HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.

Some states and specific countries do not allow the exclusion of implied
warranties or limitations on how long an implied warranty may last, so the above
limitations may not apply to you. This warranty gives you specific legal rights.
You may have additional rights that vary from state to state, and country to
country.

In the interests of product development, Drawmer reserve the right to modify or
improve specifications of this product at any time, without prior notice.

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SIX-PACK” OPERATORS’ MANUAL 1

DRAWMER Six-Pack

Multi-Channel

Surround Dynamics

SAFETY CONSIDERATIONS

CAUTION - MAINS FUSE

TO REDUCE THE RISK OF FIRE REPLACE THE MAINS FUSE ONLY WITH A

FUSE THAT CONFORMS TO BS EN 60127-2:1991 SHEET III. 250 VOLT

WORKING, TIME DELAY TYPE AND BODY SIZE OF 20mm x 5mm.

THE MAINS INPUT FUSE MUST BE RATED AT T500mA..

CAUTION - MAINS CABLE

DO NOT ATTEMPT TO CHANGE OR TAMPER WITH THE SUPPLIED MAINS

CABLE.

CAUTION - SERVICING

DO NOT PERFORM ANY SERVICING. REFER ALL SERVICING TO QUALIFIED

SERVICE PERSONNEL.

WARNING

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS

EQUIPMENT TO RAIN OR MOISTURE.

“SIX-PACK” OPERATORS’ MANUAL2

INTRODUCTION

The Drawmer SixPack is a six channel Expander/Compressor/Limiter with extensive
linking facilities which allow for the various configurations commonly used in
multi-channel surround processing as well as the more conventional stereo and
single channel operation.

Each channel has a program adaptive expander, with variable threshold and
release times, followed by a soft knee compressor with optional auto attack
and release as well as the normal manual controls. A variable threshold,
zero-overshoot limiter provides total protection against even the fastest
transients and is particularly valuable in live sound applications for driver
protection.

An optional 125Hz filter on channel 6 may be used to create the LFE channel
from a 5-1 mono mix.

Each channel of the SixPack has balanced XLR inputs and outputs, with relay
hard wire bypass, so signals still pass through the unit when the power is off.

Powered by a universal switch mode power supply, the SixPack operates from
mains voltages between 85 - 250v, eliminating the need to make any changes
when touring and allowing the unit to remain fully operational during large
fluctuations in the mains power supply.

INSTALLATION

The “Six-Pack” is designed for standard 19" rack mounting and occupies 3U of rack
space. Avoid mounting the unit directly above power amplifiers or power supplies
that radiate significant amounts of heat. Fibre or plastic washers may be used to
prevent the front panel becoming marked by the mounting bolts.

POWER CONNECTION

The unit will be supplied with a power cable suitable for domestic power outlets in
your country. For your own safety it is important that you use this cable. The unit
should always be connected to the mains supply earth using this cable

Powered by a universal switch mode power supply, the SixPack operates from
mains voltages between 85 - 250v, eliminating the need to make any changes
when touring and allowing the unit to remain fully operational during large
fluctuations in the mains power supply.

SIX-PACK” OPERATORS’ MANUAL 3

AUDIO CONNECTIONS

Both the input and output connectors may be used either balanced or unbalanced,
the wiring convention for XLR connectors being: pin 2 hot, pin 3 cold and pin 1
ground. Unbalanced operation is achieved by shorting pin 3 of the XLR connector
to ground (pin 1) at both input and output.

Interference: If the unit is to be used where it maybe exposed to high levels

of disturbance such as found close to a TV or radio transmitter,
we advise that the unit is operated in a balanced configuration.
The screens of the signal cables should be connected to the
chassis connection on the XLR connector as opposed to
connecting to pin1. The “Six-Pack” conforms to the EMC
standards.

Ground Loops: If ground loop problems are encountered, never disconnect the

mains earth, but instead, try disconnecting the signal screen on
one end of each of the cables connecting the outputs of the Six­Pack to the patchbay. If such measures are necessary, balanced
operation is recommended.